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Finding the Fourth Proportional to 4,982.81, 7,474.21 and 1,285.03

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Solution

The fourth proportional to 4,982.81, 7,474.21 and 1,285.03 is: 1,927.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,982.81 : 7,474.21 = 1,285.03 : x
  2. Step 2: Convert to fraction form
    4,982.81/7,474.21 = 1,285.03/x
  3. Step 3: Cross multiply
    4,982.81x = 7,474.21 × 1,285.03
  4. Step 4: Simplify right side
    4,982.81x = 9,604,603.26
  5. Step 5: Solve for x
    x = 9,604,603.26/4,982.81
  6. Step 6: Final answer
    x = 1,927.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.